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	<entry>
		<id>https://teaching.ncl.ac.uk/bms/wiki//index.php?title=Stromatolites&amp;diff=9705</id>
		<title>Stromatolites</title>
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		<updated>2013-11-21T23:26:45Z</updated>

		<summary type="html">&lt;p&gt;130644273: Created page with &amp;quot;Stromatolites today are found in Australia, and were also found in fossilized in Africa dating back &amp;#039;&amp;#039;3.5 billions of years ago&amp;#039;&amp;#039;. We know that Earth formed approximately&amp;#039;&amp;#039;4-4.5 ...&amp;quot;&lt;/p&gt;
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&lt;div&gt;Stromatolites today are found in Australia, and were also found in fossilized in Africa dating back &#039;&#039;3.5 billions of years ago&#039;&#039;. We know that Earth formed approximately&#039;&#039;4-4.5 billion of years ago&#039;&#039;. Therefore finding the remains of Stromatolites in Africa from &#039;&#039;3.5 billions of years ago&#039;&#039; may show us that life on planet Earth evolved soon after the formation of the surface. Stromatolites are characterized by a large columnar structure. These structures are formed by microbial activity of cyanbacteria which secrete mineral obtained from the sea into a columnar structure.&amp;lt;br&amp;gt; &lt;br /&gt;
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&amp;lt;references /&amp;gt;http://www.fossilmuseum.net/Tree_of_Life/Stromatolites.htm&amp;lt;br&amp;gt;&lt;/div&gt;</summary>
		<author><name>130644273</name></author>
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